Trademarks must be canceled when they are no longer in use. Article 73 of my country's "Regulations for the Implementation of Trademark Law" stipulates that when a trademark registrant applies to cancel its registered trademark or cancel the registration of its trademark on some designated goods, it must Submit a trademark cancellation application to the Trademark Office and return the original Trademark Registration Certificate. This not only guarantees your own rights and interests, but also gives others an opportunity to register.